More Heat and Humidity on Monday; Rain Chances Return Tuesday and Wednesday

A massive upper level ridge that has brought searing heat and stifling humidity over the southern U.S. for the past week is beginning to make a move toward the Desert Southwest, but not before gracing us with another scorching day on Monday. We begin the work week with afternoon temperatures around 100 degrees and a heat index pushing 110, then a weak front eases into the region midday Tuesday. That front will represent only a couple degrees of cooling, but it will serve as a boundary to lift the moisture and give isolated showers and thunderstorms. Rain chances dwindle quickly the second half of the week, however. Meanwhile, the tropical Atlantic remains devoid of significant activity.